/Engine/Source/Runtime/Engine/Public/GeomTools.h
Given a set of triangles, remove those which share an edge and could be collapsed into one triangle.
namespace FGeomTools { void FGeomTools::RemoveRedundantTriangles ( [TArray](API\Runtime\Core\Containers\TArray)< [FClipSMTriangle](API\Runtime\Engine\FClipSMTriangle) > & Tris ) }